"""
Case Type   : 操作系统类-文件系统故障
Case Name   : gs_ctl启停时，主机注入故障系统文件硬连接耗尽
Create At   : 2021/7/19
Owner       : @wan005
Description :
    1、注入文件硬连接耗尽故障
    2、主节点上执行gs_ctl stop
    3、主节点上执行gs_ctl start
    4、清理故障
    5、执行TPCC
    6、检查数据一致性
    7、恢复环境
Expect      :
    1、故障注入成功
    2、stop成功
    3、start成功
    4、清理故障成功
    5、执行TPCC成功
    6、数据一致
    7、恢复环境
History     :
    Modified by @wan005 2021/12/9: 优化用例增加故障注入耗时
"""
import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.CommonSH import RestartDbCluster
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node, macro


class ReliabilityFileSystem(unittest.TestCase):
    nodes = ("PrimaryDbUser", "Standby1DbUser", "Standby2DbUser")

    @RestartDbCluster(*nodes)
    def setUp(self):
        self.log = Logger()
        self.primary_sh = CommonSH(self.nodes[0])
        self.sta_1_sh = CommonSH(self.nodes[1])
        self.sta_2_sh = CommonSH(self.nodes[2])
        self.primary_root_node = Node(node="PrimaryRoot")
        self.constant = Constant()
        self.com = Common()
        self.log.info("setUp-实例化:ok")

        self.log.info("Opengauss_Reliability_OS_File_System_Case015:开始执行")
        self.file_name = f"{macro.DB_INSTANCE_PATH}/postgresql.conf"
        self.inject_cmd = f"rfile_ldeplenish_workmode " \
                          f"(filename, workmode) " \
                          f"values ({self.file_name}, fore)"
        self.clean_cmd = f"rfile_ldeplenish_workmode where " \
                         f"filename={self.file_name} and workmode=fore"

    def test_main(self):
        try:
            self.log.info("步骤1:主节点注入文件硬连接故障")
            self.log.info("注入故障")
            session = ComThread(self.com.cfe_inject,
                                args=(self.primary_root_node,
                                      self.inject_cmd))
            session.setDaemon(True)
            session.start()

            session.join(60 * 30)
            result = session.get_result()
            self.log.info("故障注入结果")
            self.log.info(result)
            self.assertIn("successful execution", result)

            self.log.info("步骤2:主节点上执行gs_ctl stop")
            result = self.primary_sh.executeGsctl("stop",
                                                  "server stopped",
                                                  get_detail=True)
            self.log.info(result)
            self.assertNotIn("Too many open files", result)
            self.assertIn("server stopped", result)

            self.log.info("步骤3:主节点上执行gs_ctl start")
            result = self.primary_sh.executeGsctl("start",
                                                  "server started",
                                                  get_detail=True)
            self.log.info(result)
            self.assertNotIn("Too many open files", result)
            self.assertIn("server started", result)

        finally:
            self.log.info("步骤4:清除故障")
            result = self.com.cfe_clean(self.primary_root_node,
                                        self.clean_cmd)
            self.log.info(result)
            self.assertIn("successful execution", result)

        result = self.primary_sh.startDbCluster()
        self.log.info(result)

        db_status = self.primary_sh.getDbClusterStatus("detail")
        self.log.info(db_status)
        self.assertTrue("Degraded" in db_status or "Normal" in db_status)

        self.log.info("步骤5:再次运行TPCC")
        result = self.com.startTPCC(self.primary_root_node, macro.TPCC_PATH)
        self.log.info(result)
        self.assertIn(self.constant.TPCC_SUCCESS_MSG, result)

        self.log.info('检查主备是否同步')
        time.sleep(10)
        self.log.info('获取节点数量')
        node_num = self.primary_sh.get_node_num()
        res = self.primary_sh.check_location_consistency("primary", node_num)
        self.assertTrue(res)

        self.log.info('步骤6:检查数据一致性')
        nodes = (Node(self.nodes[0]), Node(self.nodes[1]),
                 Node(self.nodes[2]))
        flag = self.com.check_data_sample_by_all(r'\d', *nodes)
        self.assertTrue(flag)
        table_dict = self.com.format_sql_result(
            self.primary_sh.executDbSql(r'\d'))
        table_name = table_dict.get('Name')
        for name in table_name:
            select_sql = f'select count(*) from {name};'
            flag = self.com.check_data_sample_by_all(select_sql, *nodes)
            self.assertTrue(flag)

    def tearDown(self):
        self.log.info("步骤7:环境清理")
        res = self.com.cfe_clean(self.primary_root_node,
                                 self.clean_cmd)
        self.log.info(res)

        self.log.info("检查备机是否需要重建")
        result = self.primary_sh.check_whether_need_build()
        success_msg = self.constant.BUILD_SUCCESS_MSG
        if result:
            result = self.sta_1_sh.executeGsctl('build',
                                                success_msg,
                                                '-b full')
            self.assertTrue(result)
            result = self.sta_2_sh.executeGsctl('build',
                                                success_msg,
                                                '-b full')
            self.assertTrue(result)

        self.assertNotIn("Too many open files", res)
        self.log.info("故障已清理")
        self.log.info("Opengauss_Reliability_OS_File_System_Case015:执行完成")
